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Old 01-08-2010, 01:41 AM   #1
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Question Performance chips - did anyone tried?

I was searching for a few things for my Jeep and I found this: PERFORMANCE CHIP FOR JEEP WRANGLER 97 98 99 00 01 02 03:eBay Motors (item 320469864201 end time Feb-01-10 07:12:43 PST)

Did anyone installed such a "device" on its' jeep? Are they really good of anything (I noticed that there are some other chips as well)?
I wouldn't mind some increase in mpg, but I still have some doubts in thse "marvels". The price is not huge, but I am affraid not to alter something else. If you have any experiences of this kind, I would appreciate.

Thanks,

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Old 01-08-2010, 01:49 AM   #2
Knows a couple things...

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For 99% of us, they are a 100% complete waste of $$$. The 1% it helps are those racing at the drag strip where it would make a very minor difference at wide-open throttle and near redline RPMs.

Around town, on the trail, and on the highway, you won't notice any difference. By law (smog laws), a chip can only change anything like advance the timing at wide-open throttle and near redline rpms. And once the chip is installed, the engine will ping in those conditions unless you run 89 or 91 octane.

I should add one more group might benefit... 16 and 17 year olds who haven't yet learned to drive except at wide-open throttle and near redline.

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Old 01-08-2010, 03:06 AM   #3
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I've heard they work great. I ran into a kid that has one in his TJ - he say's there's a "secret" to making them work.

1. You have to put STP stickers on the doors and hood - the big ones.

2. He wouldn't tell me what he had to do with the sheep at midnight.
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Old 01-08-2010, 04:01 AM   #4
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Thanks, I've got it. Another myth busted, to say so...
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Old 01-08-2010, 03:08 PM   #5
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When I had my shop we disected one of these. Its basically a resistor that changes the value that your MAP or MAF sensor sees and leans the vehicle. I have seen many MAP/MAF's burned up because of these.
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